Symmetry Lab › D5 › Ferrocene, twisted by 18°
Fe(C₅H₅)₂ (twisted) Ferrocene, twisted by 18°
Sandwich, rings twisted by 18° · point group D5 · order 10
- Point group
- D5 — A C5 principal axis and 5 C2 axes perpendicular to it, with no mirror plane. Molecules in this group are chiral.
- Order
- 10
- Operations
- E, 4C5, 5C₂ (rotations only)
- Shape
- Sandwich, rings twisted by 18°
- Atoms
- 21 (Fe, C × 10, H × 10)
Symmetry elements of Fe(C₅H₅)₂ (twisted)
- C₅ — the main axis
- C₂ (1) — perpendicular to the ring axis, halfway between the two rings’ atoms
- C₂ (2) — perpendicular to the ring axis, halfway between the two rings’ atoms
- C₂ (3) — perpendicular to the ring axis, halfway between the two rings’ atoms
- C₂ (4) — perpendicular to the ring axis, halfway between the two rings’ atoms
- C₂ (5) — perpendicular to the ring axis, halfway between the two rings’ atoms
Structure
- Fe–C 2.06 Å
- Rings turned 18°: halfway between eclipsed and staggered
- Only rotations survive: D5
